:^0 ]\rr. G. J. Arrow on the 



latlicr strong, inincturc?. The ridge in front of the ocelli is 

 very strong, forming a double arch, without an)' prominent 

 lateral eminences. The deep space under this ridge is tilled 

 with pollen, for what reason I do not know. In inorlo the 

 ridge is not so strong and in the middle it sends downwards 

 a process whicii encloses the middle ocellus, which is not at 

 all the case in naxitlana. There is a tuft of dark reddish 

 hair at the apex of the abdomen, almost hidden amongst the 

 black. Hind tibijfi with two teeth (side by side) on the 

 middle of the outer side. 



llab. Rio Xautla, in the neighbourhood of San Rafael, 

 State of Vera Cruz, Mexico, March 18. At flowers of plant 

 no. 18 {C. 11. T. Townseml). 



Xylocopa brasilianoruin (L.). 



Vicinity of San Rafael, Vera Cruz, Mexico, March 18, at 

 flowers of plant no. 18 ((7. //. T. Townsend). 



The hind tibiae have on the outer face an oblique keel 

 ending in two low but broad teeth ; the prominence between 

 the antennas is quite large. 



Xylocopa colona, Lep. 



Vicinity of San Rafael, Vera Cruz, ]\Iexico, $ March 23, 

 at flowers of plant no. 21 ; males March 23 and ?)0 {C. II. T. 

 Tuicnsend). 



The female is easily known from hrasilianorum by its 

 smaller size, more closely punctured abdomen, and shorter 

 third antennal joint. The male, which Smith described as 

 A^ erratica, has an extremely strong superficial resemblance 

 to X. coUaris, Lep., from the Khasia Hills, India. The form 

 of male coUaris whicli thus resembles erratica is the variety 

 mentioned by Bingham (Hymenop. J3rit. India, j). 513), in 

 which the whole thorax is covered with ochraceous pubes- 

 cence, and the third abdominal segment is provided with an 

 ochraceous down like the second. This variety, which may 

 be called var. Binghami, I have received from Mr. Sladen. 



V. — On the Coleopterous Group '' Heptaphylliui " of 

 De Borre. By GiLBKKT J. Arhow, F.E.S. 



In the monographic Catalogue of the Trogidse, published 

 in 1886 by M. Preudhomme de Borre, that family is divided 

 into Ave sections, one of which, the Heptaphyllini, was created 



