292 JOURNAL OP THE TRINIDAD 



second and third are the largest and the first rises from the base of the 

 second ; its inferior edge armed with about 8 larger and smaller spines, of 

 which the first and second are considerably the largest. Brachium granu- 

 lar like the humerus, its upper edge armed in its distal half with 7 spines, 

 of which the first and seventh are the smallest, the rest are very long, but 

 the fourth and sixth are a little shorter than the rest ; its lower edge armed 

 with 2 long and 3 or 4 shorter spines. Nanus armed above with 3 spines, 

 of which the second is much the longest, and some spinules ; its lower 

 edge armed with a long spine in the middle and 1 very much shorter one 

 in front and behind it. 



Legs thickly granular. 



Measurements of largest specimen : 



Total length 34 mm., length of carapace along the middle line 12, its 

 greatest length 14, width 19 ; length of abdomen 22, of humerus 15, of 

 brachium 16.5, of manus and dactylus 13. 



This species is very widely distributed in the Northern parts of the 

 Neotropical Region. The British Museum has examples from the following 

 West Indian Islands: — Cuba, Jamaica, Hayti, Bahamas, Montserrat, Mar- 

 tinique, Dominica (Nicholls) St. Lucia (Ramage) St. Vincent (H. H. Smith) 

 Barbados (H. IV. Feilden) and Trinidad. — It has also been recorded from 

 Porto Rico (Kai'sch) St. Bartholomew (Thorell) and Antigua (Brown). 



TWO EMBID^E FROM TRINIDAD. 



BY H. DE SAUSSURE, M.D., HON. F.E.S. 



11HE Embidse form a small Tribe composed of insects which 

 in their habits remind one somewhat of the Termitinse, 

 although they are much separated from the insects of this tribe, 

 and more approximate to the Orthoptera, principally the 

 Forficulime amd Blattidse. The whole tribe is formed by a 

 single genus. The sexes are very different from each other in 

 most of the species. Some seem to be winged in both sexes. 

 Others are winged only in the males, the females not going 

 through the last transformation but remaining quite larviform 

 although full-grown. In others still, both sexes remain larviform, 

 neither of them transforming to take wings. 



The two species here described belong to the second group. 

 The habits of the Embidre are not better known than their 

 species ; some live on sand} 7 ground between stones, others 

 seem to prefer rotten wood, others live on Orchidse, plants 

 which they seem to affect in all the different countries, 

 by cutting galleries into them, to establish their abode and 

 perhaps to eat the roots (1) They live generally in colonies 

 on the same plant and the insects envelope themselves, 

 in a silken case. The organ with which they spin the silk is in 

 the first joint of the anterior tarsi, which is on account of that 

 extraordinarily tumefied. 



