4 



(9) Dactylopiu& segregates, Ckll. (The Grass Mealy-bug.) 



Diagnosis. — Resembles D. virgatus, but is smaller. For a detailed statement of its peculiarities, 

 see Journ. Inst, of Jamaica, 1893, p. 254. 

 Food-plants. — Found on grass. 



Distribution. — Only known from Kingston, Jamaica. 

 Destrmtiveness. — Of no particular economic importance. 



(10) Dactylopius filamentosus, Ckll. (The Caicos Island Mealy-bug.) 



iagnosis. — Found in clusters, many together, on the stems of the food-plant. The clusters are 

 about three-eighths of an inch in diameter, and consist of about 10 individuals each. The insects them- 

 selves are dark grey, with two very short white terminal filaments. 



lood-plant. — Not identified, but seems closely allied to Vaccinium. 



Distribution. — Only known from the specimens found by Dr. Strachan at Cockbum's Harbour, 

 South Caicos Island. 



Destruetiveness. — Apparently of no economic importance. 



This completes the list of known West Indian Mealy-bugs. The following table will assist in their 



separation fi-om one another. 



{A.) Antennae of adult females, 7- join ted D. filamentosus. 



{B ) Antennae of adult female, 8-jointed. 



(fl.) With white caudal and lateral appendages D. longifilis. 



(b.) With white caudal appendages, but no lateral. 



(1.) Length of adult over 3 millim D. virgatus. 



(2.) Length of adult less than 3 millim ..D. segregatus. 



(c.) With white lateral appendages, but no caudal. 



(1.) Colour brownish D. citri. 



)2.) Colour pink D. brevipes. 



(d.) With no appendages, but enveloped in white secretion. 



(1.) Colour brownish Z>. simplex. 



(2.) Colour pink D. calceolarice. 



{To be continued.) 



EXPERIMENTS IN THE CULTIVATION OF VEGETABLES.— XI. 



Potatoes — Castleton Gardens. 



Names of Potatoes grown at 

 Castleton Gardens. 



Date of Planting. 



First appearance above ground. 



Days from Planting 



Date when tops were dead. 

 Potatoes ready for digging. 



Days from Planting 



Number of sets planted. 



Number of sets lifted. 



Number of Saleable Potatoes 

 per set. 



Weight of Saleable Potatoes 

 per set. 



Gross weight of Potatoes 

 per set. 



Total weight of Potatoes 

 lifted. 



Max. temp, during time 

 Potatoes were in ground. 



Min. temp. 



a 

 'S 

 P3 



Number of days rain fell. 





















OZB. 



OZB. 



lbs ozs. 







o 



lbs. 





Sutton's Magnum Bonum 



23.3 



3.4 



11 



26.6 



95 



22 



20 



3.0 



6.0 



10.0 



12 8 



76.2 



65.1 



13.58 



65 



Sutton's Red-Skin Flourball 



23.3 



3.4 



11 



20.6 



89 



24 



20 



1.8 



4.8 



8 



10 



75.2 



64.4 



11.96 



60 



Sutton's Reading Hero 



23 3 



2.4 



10 



26.6 



95 



27 



20 



1.5 



2.2 



4 



5 



76.2 



65.1 



13.58 



66 



Sutton's Triumph 



23.3 



31.3 



9 



26.6 



89 



20 



21 



2.3 



3.4 



6.4 



8 8 



75.2 



64.4 



11 96 



60 



Sutton's Nonsuch 



23.3 



3.4 



11 



16.6 



85 



25 



20 



1.2 



1.6 



3.0 



3 12 



74.7 



64.7 



11.96 



50 



Sutton's Perfection 



23.3 



3.4 



11 



20.6 



89 



24 



8 



1.8 



2.0 



4.0 



2 



75.2 



64.4 



11.96 



50 



Sutton's Windsor Castle 



23.3 



2.4 



10 



26.6 



95 



24 



17 



1.9 



3.2 



6.4 



6 12 



76.2 



65.1 



13.68 



. 55 



Sutton's Seedling 



23.3 



31.3 



9 



26.6 



95 



24 



23 



2,0 



4.3 



2.0 



3 



76.2 



65.1 



13.58 



56 



Sutton's Fiftyfold 



23.3 



31.3 



9 



16.6 



85 



21 



13 



1.0 



1.2 



1.3 



3 8 



74.7 



64.7 



11.96 



60 



Sutton's Matchless 



24.3 



31.3 



8 



12.6 



81 



20 



14 



1.2 



1 1 



2.2 



2 



75.1 



65.8 



10 49 



47 



Sutton's Lady Truscott 



24.3 



3.4 



10 



12.6 



81 



28 



17 



1.4 



2 5 



4.7 



5 



76.1 



65.8 



10.49 



47 



Sutton's Ashleaf 



24.3 



3.4 



10 



10.6 



85 



24 



15 



1.2 



1.3 



3.4 



3 4 



74.7 



64.7 



11.96 



60 



E. J. F. C. 



