1921] E urn eves oUuandi 163 



part of its length, feebly and gradually thickened toward its base, 

 rather rapidly pointed at its apex, which is sharp and feebly curved : 

 it can be folded into a small, deep, rounded pit at the extreme 

 base of the under side of the tenth joint. Abdominal sternites 

 three to seven more abundantly hairy than in E. maxillosus. 



General coloration as in the female, Init the posterior half of 

 the petiole of the abdomen dorsally with a broad, heart-shaped, 

 black mark (a black triangle with the apex directed posteriorly 

 and the anterior base deeply emarginate). The last three abdom- 

 inal sternites more or less ferruginous. 



This species is evidently allied to E. maxillosus, but the male 

 possesses such striking morphological peculiarities that it cannot 

 be regarded as a color race of that species. I have been unable 

 to find any close relative among the many species of Eumenes 

 known from the Oriental and Indo-malayan regions. 



The five females and two males seen by me are all colored much 

 alike and come from the following localities : Mahe Island, Sey- 

 chelles, 3 9 9; Seychelles, 1 Q and 1 S ; Glorioso Islands, 

 1 5 and 1 9 . All collected by Dr. W. L. Abbott. 



E. alluaudi is known thus far only from the Seychelles and 

 the Glorioso Islands (about 120 miles off the northern point of 

 Madagascar, in the Strait of Mozambique), where no other species 

 of the genus has thus far been collected. Very likely it is to be 

 found also in the Comoros, although typical E. maxillosus alone 

 has been recorded there. It evidently does not occur on Mada- 

 gascar, which possesses two color forms of E. lepeleterii (pensilis 

 Saussure and guerini Saussure) and one of E. maxillosus (reginus 

 Saussure), all peculiar to that island, in addition to typical E. 

 maxillosus. 



J. Perez described E. alluaudi originally from Mahe. Cameron^ 

 recorded it as common on Praslin and ]\Iahe. G. ]\Ieade Waldo,^ 

 who gives Silhouette and Dennis Island as additional localities, 

 notes that it "very often makes its cells in rooms; it was not 

 observed in the highest forests." Its habits are thus evidently 

 similar to those of E. maxillosus. The same author comments as 

 follows upon the reddish chrome color pattern of E. alluaudi being 



' Trans. Linn. Soc. London, Zool., (2) 12, 1907, p. 71. 

 = Ibid., (2) 15, 1912, p. 43. 



