174 bulletin: museum of comparative zoology. 



rostrum reaches only to the proximal end of the sixth article of the 

 antennae. This form is darker than the others, more brown, espe- 

 cially anteriorly. The antennae contrast sharply in color with the 

 adjacent part of the body, being bright yellow. The body is broader 

 and flatter than in the other two species described from Haiti, and the 

 hair is shorter, uniform in length. 



Number of segments, eighty-one. 



Length, 23 mm.; width, 1.1 mm. 



71. SiPHONOPHORA ROBUSTA, Sp. nOV. 



Type.— M. C. Z. 4,305. Paratypcs.— M. C. Z. 4,306-4,307. 

 Jamaica: Liguanea Plain, 1911. C. T. Brues. 



This is a shorter and proportionately much broader species than 

 any one of the Haitian species above listed. The head is shorter and 

 more globose. The antennae are relatively very long and stout, 

 exceeding the rostrum by the last three and a half to nearly four 

 articles. The dorsum is densely clothed as usual with very short 

 straight hairs, these being of uniform length throughout. The body 

 above is brownish. 



The number of somites is, in the typical adults, from fifty-five to 

 sixty-four. A small specimen apparently this same species has but 

 forty-four somites; its antennae are proportionately shorter than in 

 the others. 



Length of type, 17 mm.; width, 1.3 mm. 



71a. SiPHONOPHORA TOBAGO.^NA, Sp. nOV. 



Tijpe.— M. C. Z. 4,308. Tobago: King Bay, April, 1914. Para- 

 types.— M. C. Z. 4,309, 4,310. Tobago: near Richmond Bay. H. L. 

 Clark. 



An unusually thin species ; flattened dorsoventrally. Head rather 

 elongate, equalling or exceeding the rostrum. The antennae long, 

 exceeding the rostrum by the seventh, sixth, and half or more of the 

 fifth articles of the antennae. Sixth article of antennae long, cylin- 

 drical. First tergite moderately mesally incurved anteriorly. Dorsum 

 clothed with very short hairs, those of the anal segment being some- 

 what longer than the others. Color yellow of a distinctly reddish 

 or orange tinge. 



Number of somites in four adult specimens from eighty-nine to 



