386 Mr. E. E. Austen on Specimens of the Genus 



reddish brown, the third joint stout, rather longer than the 

 first two joints taken together. The dorsum of the thorax 

 greyish black, shining, clothed with short black pile ; the 

 pleurae clothed witli longer yellowish-white pile, which 

 terminates above the base of the wing in front of the posterior 

 tubercle. Of the tln-ee black spots on the pleurae, arranged 

 in a triangle^ the upper one, which consists in a tuft of black 

 pile, is in one specimen almost obsolete. Legs shining dark 

 reddish brown, entirely clothed with black pile. Dimensions : 

 length 16 millim. ; width of vertex 3 millim. ; width of head 

 7 millim. ; width of abdomen at base of third segment 7^-8 

 millim. ; length of wing 13 millim. 



These specimens are much smaller than any other species 

 of Cutiterehra in the collection, and their size and the white 

 tip to the abdomen give them a very distinctive appearance. 

 One specimen has three yellowish eggs adhering to the right 

 hind tarsus. 



Cutiterehra analis, Mcq. (= C. apicalis, Guer.). 



Cuterehra analis, Macquart, Diptei'es Exotiques, ii. 3, pp. 22-23^ tab. ii. 



fig. 5 (1843). 

 Cuterehra apicalis, Guerin-M^Deville, Iconographie du Eegne Animal, 



Insectes, pp. 547-548 (1844), and pi. ci. fig. 1 &c. (1835). 



Two specimens, male and female — the former from Orizaba, 

 Mexico {Salle), the latter from Tunantins, R. Amazons, 

 Brazil {Bates). The male has a fleck of black pile on the 

 humeral tubercles in addition to those on the pleurse. 



Guerin-M(jneville's excellent coloured figure leaves no 

 doubt of the synonymy above given. Macquart's figure, on 

 the other hand, is execrable; but his description is much 

 more detailed than that of Gu^rin-Meneville. It is clear from 

 internal evidence (the date 1844 is quoted on p. 531 and 

 " mars 1844 " on p. 553) that the description of C. apicalis 

 was not published until 1844, although the date on the title- 

 page of the portion of the ' Iconographie ' which contains the 

 Insects would lead the reader to suppose that it appeared in 

 1838. The particular plate on which the figure of C. ajncalis 

 is given is, like certain other of Gu^rin-Mdneville's plates, 

 not dated ; but since the plates immediately preceding and 

 following it bear the date " 8*"'^ 1835," we may safely con- 

 clude that pi. ci. was published at the same time. On the 

 whole, however, it seems better to adhere to the principle 

 that a figure of a species unaccompanied by a description does 

 not constitute publication. 



