72 THE ENTOMOLOGIST. 



Uhler in Trepobates, are observable in a few examples. In 

 reviewing the subject, I have little hesitation in writing " Tro- 

 chopus" as a synonym of '' Rhagovelia," and the Jamaican 

 species as : 



Rhagovelia plumhm, Uhler == Trochopus marinus, Carpenter = 

 Taochopus plumheus (Uhler), Carp, and Champ. 



New locality. — Eock Fort, St. Andrew (C. B. Taylor). 



Additions to the Aquatic Fauna. 



11. Corixa kollarii, Fieber. 



I recorded this species doubtfully from females in Part I. I 



can now confirm its presence from specimens sent by Mr. Taylor 



from Yardley Chase, Santa Cruz Mts., St. Elizabeth (Oct. 31st, 



1899) ; taken at light (C. B. Taylor-). 



12. Corixa pygmcea, Fieber. 



Same locality as the preceding, and also from Rae Town, 

 Kingston ; at light {C. B. Taylor). This is the species referred 

 to previously under N. undulata. 



13. Anisops palliycs (Fabr.) 



One female from rain-tanks, Yardley Chase (C. B. Taylor). 



14. Gerris guerini, Leth. & Sev. (= marginatus, Guer. nee Say). 



Macropterous and apterous females and nymphs from (a) 

 Yardley Chase, Southfield District of Santa Cruz Mts., St. Eliza- 

 beth (altitude 1500 ft.), Oct. 31st, 1899, from rain-water tank ; 

 and (^) Rock Fort Road, St. Andrew, four miles east of Kingston, 

 April 16th, 1892 ; shallow pool at roadside under limestone bank 

 {C. B. Taylor). 



15. Rhagovelia tayloriella, sp. nov. 



Elongate ; head above distinctly sulculate [? generic character] . 

 Basal segments of antennas and the legs with long scattered bristly 

 hairs. First antennal segment one-half longer than second, which is 

 very slightly longer than the third, the latter a trifle longer than the 

 fourth. Rostrum reaching to the middle of the mesosternum. Inter- 

 mediate femora two-fifths longer than tibife, not constricted medially ; 

 tibiae subequal to the tarsi, armed with a short straight spine at apex ; 

 third tarsal segment one-seventh longer than the second. Posterior 

 femora very slightly longer than the tibiae, which are nearly three 

 times as long as the tarsi ; second tarsal segment three-j5fths longer 

 than the first ; posterior tibiae straight. Macropteroiis form : pronotum 

 somewhat obsoletely carinate longitudinally. Long. 6 mill. 



$ . Third antennal segment noticeably incrassate ; anterior tibiae 

 considerably dilated (especially towards the apex), and excavated 

 beneath. Posterior femora considerably incrassate, and armed beneath 

 with ten to eleven strong teeth, from the centre to the apex, diminish- 

 ing regularly in size towards the apex ; tibi* conspicuously denticu- 

 late ; trochanters denticulate. Sixth (? seventh) abdominal segment 



