BRUES: A NEW PERIPATUS FROM COLOMBIA. 381 



two animals were in contact when taken. On the trail toward 

 Minca below the Plantation in forest. Log exposed to full rays 

 of sun. Altitude about 2,100 feet. July 24, 1913. 

 172. Three Peripatus, same locality us last, one under the bark of a 



log, two in cavities made by beetles in log. 

 179. Peripatus under log in forest southwest of the Plantation. Alti- 

 tude about 2,200 feet. July 25, 1913. 

 Locomotion. They crawl backward as well as forward, and may 

 use one, two, three, four, five, or six pairs of legs at the anterior end 

 alternately, but may use all pairs of legs together. I placed se\-era! 

 in a big white developing tray. They often crawled away from the 

 light, though they frequently went toward it, or without reference to 

 it. Often when they came to the edge of the dish, or sometimes when 

 a card was held between them and the light, they raised the anterior 

 end and waved it abnut. Tlie la^t nr Inst two pairs of legs are usually 

 not used in walking but are held quiet abo\e the substratum upon 

 which the animal moves. Often the first three pairs of legs are thus 

 held immobile. 



I put Nos. 58 and 50 (large) in a vial with a beetle larva, a silver fish, 

 and a milliped. Although these crawled over the Peripatus it did not 

 shoot out any white threads. I pinched No. 50 (small); it turned its 

 anterior end and shot out a colorless secretion which stuck to the 

 forceps and fastened the myriopod to the tray so that it could not 

 escape. I pinched No. 50 (large), and it gave out a colorless, rather 

 viscid secretion from two ventral lateral papillae on the under side of 

 the head. This secretion fastened the beetle larva to the bottom of 

 the tray, but it soon hardened so that it was not sticky. I pinched it 

 again. The head was turned back and the secretion shot out for a 

 distance of about 2 cm. It formed a reticulate network on the back 

 of the Peripatus and stuck it to my forceps. The Peripatus was 

 unable to free itself from the forceps for an hour, when I released it. 



On a later day I squeezed a Peripatus and induced it to throw 

 threads from the bases of several of the legs behind the head. 



Note on a Collection of Peripatus from Trinidad and Grenada. Dur- 

 ing a visit to Grenada and Trinidad during the winter of 1912-13, Prof. 

 Roland Thaxter secured a very extensive collection of Peripatus from 

 these islands, which he has given to the Museum of Comparative 

 Zoology. Though unsuccessful in collecting further specimens of 

 Peripatus harhouri Brues, a species peculiar to the high portion of 

 Grenada, he obtained a single small specimen, (M. C. Z. No. 199), of 



