NO. T590. ON SOME NEW WEST INDIAN THRIPS— FRANKLIN. 719 



Specimens taken at Glendor, St. Michael; Newstead, St. Peters; 

 Cane Garden, St. Thomas; Spring, St. Thomas; St. Anns, St. 

 Michael ; Belle, St. Michael ; Bellevue, St. ^Michael ; Walmoral Lodge, 

 St. Michael. Dates of capture range from July 20 to September 5. 



This species is most closely allied to the European PJufhrips vvlga- 

 tissinuis (Haliday). It may. ho^Yever, be separated from that species 

 by the presence of postocular bristles and by the color of the males. 

 This appears to be the most common species in Barbados, as it is 

 represented in the collection by 135 females and 47 males. 



An unusual deformity is the double front ocellus seen in one of the 

 males. 



2. EUTHRIPS TRITICI (Fitch). 



Of this sjoecies there are G4 females and 20 males in the collection. 

 It seems to be the second most abundant species in the island. In Bar- 

 bados this insect was taken on the following new food plants: Black 

 willow, tomato, frangipani, papaw, Avatermelon, cotton, horse-radish 

 tree, Hihlscus, Crotolaria, white wood, bean, Ipomea, Bermuda lilies, 

 and eddoe (a variety of yam). 



Specimens taken at St. Anns, Belle, Glendor, Bellevue, Waterford, 

 Pine Estate, and Walmoral Lodge, St. Michael ; Cane Garden and 

 Spring, St. Thomas; Newstead, St. Peters. On flowers and leaves,' 

 often in colonies. Dates of capture ranging from July 12 to August 22. 



3. HELIOTHRIPS H.(EMORRHOIDALIS (Bouche). 



This species is represented by 27 females and several larval speci- 

 mens. A common greenhouse pest in Europe and the United States, 

 and in those parts of the world confined almost entirely to green- 

 houses. This species is found in the open in St. Vincent and Barba- 

 dos. It is evidently a tropical species. Some of its food plants in St. 

 Vincent are cacao, and kola, and in Barbados it is found on date 

 j^alms. 



Specimens taken on St. Vincent and at Glendor, St. Michael, Bar- 

 bados. Insects found in colonies on leaves and flowers. 



The larvae of this species, at least as they approach maturity, are 

 yellow in color and have the abdomen for the most part covered over 

 Avith small, wart-like elevations. Most of the hairs on the body, 

 except at the tip of the abdomen, are knobbed. The apical abdominal 

 segments are somewhat tubular, and thus present an appearance sim- 

 ilar to that seen in the Phla^atliripida». These apical segments are 

 usually slightly stained on the sides with brown. 



4. HELIOTHRIPS RUBROCINCTUS (Giard). 

 Plate LXIV, figs, 10, 14 ; Plate LXV, figs. 17, 20, 21. 



Female. — Length, 0.92 mm. to 1.12 mm. ; width of head, 0.16 nun. 

 to 0.23 mm.; width of prothorax, 0.20 mm. to 0.25 mm.; width of 

 Proc. N. M. vol. xxxiii— 07 46 



